Merge pull request #7375 from davkean/nuget

Upgrade NuGet to 3.4.0.247 and increase restore timeout

Restore.cmd

@@ -2,6 +2,7 @@
 @setlocal
 
 set NuGetExe="%~dp0NuGet.exe"
+set NuGetAdditionalCommandLineArgs=-verbosity quiet -configfile "%~dp0nuget.config" -Project2ProjectTimeOut 1200
 
 REM If someone passed in a different Roslyn solution, use that.
 REM We make use of this when Roslyn is an sub-module for some 
@@ -10,13 +11,13 @@ set RoslynSolution=%1
 if "%RoslynSolution%" == "" set RoslynSolution=%~dp0Roslyn.sln
 
 echo Restoring packages: Toolsets
-call %NugetExe% restore -verbosity quiet "%~dp0build\ToolsetPackages\project.json" -configfile "%~dp0nuget.config" || goto :RestoreFailed
+call %NugetExe% restore "%~dp0build\ToolsetPackages\project.json" %NuGetAdditionalCommandLineArgs% || goto :RestoreFailed
 
 echo Restoring packages: Samples
-call %NugetExe% restore -verbosity quiet "%~dp0src\Samples\Samples.sln" -configfile "%~dp0nuget.config" || goto :RestoreFailed
+call %NugetExe% restore "%~dp0src\Samples\Samples.sln" %NuGetAdditionalCommandLineArgs% || goto :RestoreFailed
 
 echo Restoring packages: Roslyn (this may take some time)
-call %NugetExe% restore -verbosity quiet "%RoslynSolution%" -configfile "%~dp0nuget.config" || goto :RestoreFailed
+call %NugetExe% restore "%RoslynSolution%" %NuGetAdditionalCommandLineArgs% || goto :RestoreFailed
 
 exit /b 0